diff --git a/core/README.MD b/core/README.MD
index 6176db3..cd77165 100644
--- a/core/README.MD
+++ b/core/README.MD
@@ -18,20 +18,6 @@ Bean:
 </bean>
 ```
 
-### InMemoryPlayerManager
-
-Implements: `mc.core.PlayerManager`
-   
-Bean:
-
-```xml
-<bean id="playerManager" class="mc.core.embedded.InMemoryPlayerManager">
-    <property name="keepAliveInterval" value="10"/>
-</bean>
-```
-
-`keepAliveInterval` - как часто (в ms) отправлять клиентам пакет `KeepAlive`
-
 ### IdleTime
 
 Implements: `mc.core.time.TimeProcessor`